﻿@model bool?

@if ((Model.HasValue && Model.Value) || !Model.HasValue)
{
    <input type="radio" name="display" value="true" checked="checked"/> @: Có
    <input type="radio" name="display" value="false"/> @: Không
}
else
{
    <input type="radio" name="display" value="true"/> @: Có
    <input type="radio" name="display" value="false" checked="checked"/> @: Không 
}
